LED measuring day at Bloomtech, Göttingen area

In September we launched our first LED measuring day in Bovenden (Germany, close to Göttingen). We met with Bloomtech’s Thomas to run the first part of our measurement series. We set up a tent to provide a measurement area of 1m2 and tested various LED lights by different manufacturers.

The measuring marathon ended up being a great day of work and fun. Thomas provided bratwurst and beer (thanks again for that!) and we talked shop about everything LED.

Measurement Setup

The setup is comparatively simple. We provided 1m2 of measuring space and installed 81 metering points of which we ended up using 25. They are highlighted by the big black dots.

The second tool was a simple rod on which we marked our three measuring heights, making it easy to adjust the lights for our tests.

Finally, the last and most important tool we used was an Apogee Full Spectrum Quantumsensor, a sensor with a spectral range of 389 to 692 nm. To ensure that all lights reached their respective working temperatures before the tests we switched them to full power 15 minutes prior to the actual tests.

LED Measuring Day – Results

The idea behind the tests was to compare the different lights in real life situations and so the heights in which we installed the respective lights was dependent on the specifications of each single light. We used heights of either 30cm, 60cm or 90cm. The goal was to compare illumination and PPFD data if the lights are used either as you would find them in shops or in use by regular customers. The collected data was transferred to an excel-sheet and is listed below.

V-Tac 9111 100W LED High Bay UFO

Manufacturer’s specifications:

LED typeSMD

Operational life span30 000 hours

Power100W

EQ. Power1000W

Color temperature6000K

Color rendering index CRI80

Dispersion angle120 °

Dimming functionNo

Warranty5 Years

Hydroca Blue Line 416

Manufacturer’s specifications:

LED type Osram & Cree

Operational life span 50 000 hours

Power416W

EQ. Power 600W

Color temperature LED Ratio 660nm/630nm/450nm/460nm/3.5k

Color rendering index CRI –

Dispersion angle 90 °

Dimming function No

Warranty 2 Years

Budmaster G.O.D 2

Manufacturer’s specifications:

LED typ Osram SSL

Operational life span 100 000 hours

Power97W

EQ. Power –

Color temperature –

Color rendering index CRI –

Dispersion Angle –

Dimming function No

Warranty 5 Years

GBK T9 LED Cluster (newer Greenception models – to be tested soon!)

Manufacturer’s specifications:

LED type –

Operational life span –

Power245W

EQ. Power 400W

Color temperature –

Color rendering index CRI –

Dispersion angle –

Dimming function No

Warranty –

3x Sanlight M30

Manufacturer’s specifications:

LED type –

Operational life span 80 000 hours

Power30W (per Modul)

EQ. Power –

Color temperature –

Color rendering index CRI –

Dispersion angle 90°

Dimming function No

Warranty 3 Years

Spektrum King SK600

Manufacturer’s specifications:

LED type Cree

Operational life span 50 000 hours

Power640W

EQ. Power 1000-1200W

Color temperature –

Color rendering index CRI –

Disperion angle 90° oder 120°

Dimming function Yes

Warranty3 Years

sunflow 1m² Bundle 300W

Manufacturer’s specifications:

LED type Cree CXB3590

Operational life span 60 000 hours

Power150W (per Modul)

EQ. Power 450 W

Color temperature 3500K

Color rendering index CRI 80

Dispersion angle 72°

Dimming function Yes

Warranty5 Years

Results!

You can (and should) make up your own mind concerning the results and we would love to hear what you think – post your thoughts in our support chat or join one of our live streams on youtube (coming soon). Also, we’re currently planning on going live with knowledge transfers. Please get in touch with us if you are interested in that regard!

Of course we’re always available for questions and feedback in general – maybe you’ll even catch us live in the small window below. We hope we’ve been able to help you with your decision as to which LED grow light is right for you.

If you like what you see here please consider to subscribe to our Youtube-Channel – more info coming soon!